Magnetic-power mechanism.



PATENTED DEO. 29? 1903 P. HACHMANN.

MAGNETIC POWER MECHANISM.

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APPLIOATION FILED MAY 8. 1903.

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UNITED STATES Patented December 29, 1903.

PATENT OFFICE.

FREDERICK HAOIIMANN, OE ST. PAUL, MINNESOTA, ASSIGNOR OF THREE FOURTHSTO E. R. IVISWELL AND BENJAMIN E. SIMON, OF ST. PAUL, MINNESOTA, ANDLUTHER H. STILES, OF REDWING, MINNESOTA.

MAGNETIC-POWER NIECHANISM.

SPECIFICATION forming part of Letters Patent No. 748,182, dated December29, 1903.

Application filed May 8,1903. Serial No. 156,155. (No model.)

To LZZ whom t may concern;

Be it known that I, FREDERICK HACHMANN, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented certain new and useful Improvements in Magnetic PowerMechanism; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othxo ersskilled in the art to which it appertains to make and use the same.v

My present invention has for its object to provide an improved powerdevice or transmission mechanism; and to this end it cont5 sists of thenovel devices and combinations of devices hereinafter described, anddefined in the claims.

My improved device I call a magneticpower mechanism.

zo Theinvention isillustratedin the accompanying drawing, wherein thesingle view is partly in section and partlyin side elevation.

In the said drawing the numeral 1 indicates a suitable base, from whichrises a rigid rectangular frame 2.

The numeral 3 indicates in diagram an electric motor, which, as shown,is superimposed on and rigidly secured to the frame 2 at its uppercentral portion. The armatureshaft 4 of the motor carries asprocket-wheel 5 and a spur-gear 6, both of which parts are indicated bydotted lines in the drawing. The gear 6 meshes with a similar gear 7,suitably mounted on the motor-case and having secured to it a sprocket Sfor a purpose which will hereinafter appear. Suitably mounted at eachupper corner of the frame 2 is a short counter-shaft 9, to which isrigidly secured an eccentric drum 10 and a large sprocket 4o 11. Alsosuitably mounted on the frame 2 below the pair of shafts 9 is anotherpair of counter-shafts 12, each having rigidly secured to it aneccentric drum 13 and a large sprocket 14. A sprocket-chain 15 runs overthe driving-sprocket5and overtheleft-handsproclrets 11 and 14, and asimilar sprocket-chain 16 .runs over the driving-sprocket S and over theright-hand sprockets 11 and 14. It will thus be seen that when the motor3 is thrown into 5o action the eccentric drums 10 and 13 will berotated. The eccentric drums are so set on their shafts that when thetwo upper drums project inward to theirextreme throw the two lower drumswill project outward to their extreme throw.

Magnets 17 are disposed radially within each drum throughoutapproximately a semicircumference thereof. The segments of said drumscontaining the magnets are at one side of the line drawn to intersectthe center of a 6o particular drum and the aXis of its shaft.Furthermore, the magnets of the upper and lower drums are so disposedthat they will be thrown inward in alternate order-that is, the magnetsof one of the drums at a given side of the machine will reach an extremeinward point just as the magnets of the other drum on the same sideleave an extreme inward position. The purpose of this will presentlyappear. In the drawing the mag- 7o nets 17 are permanent magnets; butinpractice they may be either permanent magnets or electromagnets.

Mounted in suitable bearings 13 on the upper portion of the frame 2 andconnected for 7'; reverse movements by a toggle 19 is a pair of plungers20, provided at their inner ends with pivoted segmental armatures 2l,which closely engage the peripheral surfaces of the upper drums 10.Similar plungers 22 are 8o mounted in bearings 23 on the base 1 and areconnected for reverse movements bya toggle 24. At their outer ends theplungers 22 are provided with pivoted segmental armatures 25, thatengage the peripheral surfaces of 83 the lower drums 13. Theintermediate joints of the toggles 19 and 24 are connected by a link 26,which is of such length that when one of the toggles is straightened outthe other will be buckled. 9o

27 indicates a crank-shaft suitably mounted in the base 1 and providedwith a crankdisk 28, which, as shown, is connected to the intermediatejoint of the toggle 24 by a pitman 29. 1n practice the armatures 2l ando;

25 may be provided with antifriction-rollers for reducing the frictionbetween the same and the peripheries of the cooperating eccentric drums.

The action will be substantially as follows: roo

We will assume that the several eccentric drums are being positivelyrotated in the directions indicated by the arrows marked thereon in thedrawing, in which case it Will be noted that the magnets of the uppereccentric drums have just commenced to act on the cooperating armatures2l, while the magnets of the lower drums are just passing out of actionon their cooperating armatures 25. Under continued movements of thedrums the eccentric surfaces of the upper drums for the next halfrotation move farther and farther away from each other, and theirmagnets, acting on the cooperating armatures 2l, draw the plnngers 2Oaway from each other and straighten out the upper toggle 19, and therebydraw upward the link 26 and buckle the lower toggle 2a. rlthehalf-sections of the eccentric drums not containing magnets arenon-magnetic, this being accomplished in any on-e of many ways-as, forinstance, by constructing the said drums ot' brass. Under the firsthalf-rotation of the drum just described the toggles andconnecting-links are moved into the positions indicated by dotted linesin the drawing, and it is obvious that under the next followinghalf-rotation of the drums the magnets of the lower drums will becomeoperative to reverse the action of the toggles and move the parts backinto the positions indicated by full lines in the drawing. In this waythe connecting-link 26 is reciprocated and motion is transmitted to theshaft 27, being first converted into rotary motion by the crank-disk 28and pitman 29. It will of course be understood that the mechanismdescribed is capable of many modifications within the scope of theinvention herein set forth and claimed. For instance, the so-calledeccentric drums instead of being true cylinders might have any otherform which would give them eccentricity. Ot course the motion maybetransmitted from the eccentric drums and coperating armatures bymechanism other than that illustrated in the drawing.

I have proceeded on the following theory, to wit: that an armature maybe much more easily removed from the field of the magnet males byrelative transverse sliding movements than by direct outward pull, or,what is the same thing, a magnet may be moved away from its armaturemore easily by moving it transversely ofthe ield or parallel to the faceof the armature, and that therefore greater power is exerted by themagnets to pull the armatures outward than is exerted by thedrum-driving` mechanism in rotating the drums.

The above theory is one insisted upon by me.

Vhat I claim, and desire to secure by Letters Patent of the UnitedStates, is as follows:

l. The combination with a rotary eccentric carrier havingperipherally-disposed magnets, of an armature subject to the saidmagnets and having connections t'or transmitting motion, which drummoves the said magnets transversely out ot action on said armature,substantially as described.

2. The combination with a pair of eccentric drums and means for rotatingthe same so that they project simultaneously inward and simultaneouslyoutward, the said drums having peripheral magnets, of armatures subjectto the magnets of said drums, and a toggle connected to said armatureand having connections for transmitting motion therefrom, substantiallyas described.

3. The combination with two pairs of eccentric drums and means forrotating` the same, of magnets carried by said eccentric drums anddisposed in segments thereof, armatures subject to the magnets of saiddrums, and connections from said armatures for transmitting motiontherefrom, the magnets of the one pair of drums being arranged to actsimultaneously on the cooperating armatures, and the magnets of theother pair of drums being arranged to alternate with the inagnets of thecorresponding drum of the other pair, substantially as described.

In testimony whereof I attix my signature in presence ot two witnesses.

FREDERICK HACHMANN.

I/Vitnesses:

GENEVIEVE Hmson, F. D; MERCHANT.

